Resolving Three.js Asynchronous Loading Issues for PointCloud Data

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Here’s a quick look at the problematic code snippet:

[[See Video to Reveal this Text or Code Snippet]]

In this code, you call print() immediately after initializing your model, but because of the asynchronous nature of the loader, max_x remains -Infinity. You attempt to remedy this by making initModel asynchronous and awaiting it during the print function, but that doesn’t work either.

The Solution: Embracing Asynchronous Programming

Understanding Asynchronous JavaScript

Synchronizing Your Logic

To handle this properly, we should delegate the printing action to occur within the success callback of the load function. This ensures that print() executes only after the geometry has fully loaded and processed.

Here’s how you can update your code:

[[See Video to Reveal this Text or Code Snippet]]

Why This Approach Works

By moving the print() function call inside the callback, you allow your program to wait for the data to load before performing calculations or logging outputs. This way, you properly leverage the asynchronous nature of JavaScript, allowing the program to continue running without being blocked while waiting for data retrieval.

Alternatives to Consider

While executing code in callbacks is a practical approach, there are scenarios where you might want to devise methods to ensure synchronous-like behavior. Here are some alternatives worth considering:

Polling Method: You could implement a polling mechanism using promises to check periodically if loading has completed. However, be cautious as this can lead to less efficient code.

Conclusion